New subclasses of bi-univalent functions

@article{Frasin2011NewSO,
  title={New subclasses of bi-univalent functions},
  author={B. Frasin and M. Aouf},
  journal={Appl. Math. Lett.},
  year={2011},
  volume={24},
  pages={1569-1573}
}
Abstract In this paper, we introduce two new subclasses of the function class Σ of bi-univalent functions defined in the open unit disc. Furthermore, we find estimates on the coefficients | a 2 | and | a 3 | for functions in these new subclasses. 
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